Plant diseases significantly affect agricultural productivity and crop quality, making early detection essential for sustainable farming. This study presents a simple deep learning framework for automated plant disease detection using leaf images. A Convolutional Neural Network (CNN) model was developed and trained on a publicly available plant disease dataset to classify healthy and diseased leaves. Image preprocessing and augmentation techniques were applied to improve model generalization and performance. Experimental results demonstrate that the proposed framework effectively identifies plant diseases with high accuracy while maintaining low computational complexity. The proposed approach can assist farmers and agricultural experts in timely disease diagnosis and crop management.